Download ALPS Introduction - GE Digital Energy

Industrial Systems
Digital Generator
Protection System
• Microprocessor Based
Protection, Control and
Monitoring System
• Waveform Sampling
• User Friendly
• GE/Hydro Quebec Joint
Development
1
Industrial Systems
2
Industrial Systems
System Overview
•
•
•
•
Multiple Microprocessors
Sampling Rate = 12 Samples/Cycle
20 MHz Operation
Auto Gain Change A/D Converter
DSP’S
3-TMS320
8 CURRENTS
4 VOLTAGES
FILTER
AND
MUX
MICROPROCESSORS
2-80C186
ANALOG
TO
DIGITAL
CONVERTER
REMOTE
PC
MMI
TIME SYNCH
(IRIG-B)
6 CONTACT
INPUTS
4 TRIP
RELAYS
DIGITAL
INPUTS/
OUTPUTS
11 AUXILIARY
RELAYS
3
Industrial Systems
Applications
• For Small, Medium and
Large Generator
Protection
• Suitable for Variety of
Prime-Movers - Gas,
Steam, Hydro Turbines
• Most Commonly Used
Protection Functions
Packaged in a
Standard Modular
Case
4
Industrial Systems
Protective Functions
(87G)
• Stator Differential (87G)
– Variable Slope Characteristic
• 100% Stator Ground Fault (64G)
– Two Overlapping Zones
– 95% with Fundamental Neutral OV
– 15% with 3rd Harmonic Comparator
– or 15% with 27TN Function (Special)
• Time Overcurrent
with Voltage Restraint (51V)
• Current Unbalance (46)
– Negative Sequence Overcurrent - I22t
– Linear Reset Characteristic
• Loss of Excitation (40)
– Two Zones of Off-Set Mho
X
(40)
R
Offset = X’d
2
Diameter =
1.0 pu
Diameter =
Xd
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Industrial Systems
Protective Functions (Cont.)
(24)
VOLTS/HERTZ (%)
• Overexcitation or V/Hz (24)
140
– Inverse Characteristic
130
– Instantaneous with Time Delay
120
• Reverse Power (32)
110
– Two Levels
100
• Under/Over Frequency (81)
– Multiple Steps (2-4)
.01
– Undervoltage Cutoff Feature
• Overvoltage (59)
– Inverse Characteristic
• Undervoltage (27)
• Neutral Overcurrent (51GN)
Transformer Limit Curve on
Generator Voltage Base
Generator Manufacturer’s
Recommended Protection Curve
Relay Characteristic
0.1
1.0
10
TIME (MINUTES)
100
6
Industrial Systems
Additional Protective Features
• Voltage Transformer Fuse Failure (VTFF)
– Internal or External
– Block 40 and 51V functions
Overcurrent
(voltage restraint)
AND
51V
VTFF+DI6
FD
Loss of Excitation
Zone 1
AND
TL12
40-1
Loss of Excitation
Zone 2
AND
TL13
40-2
DI6
OR
Ext. VTFF
ENA
PU
DO
DIS
PU=3 Samples
DO=5 Samples
V2 > 15V
SELV2SUP
7
Industrial Systems
Adaptive Sampling Interval 30.5 - 79.5 Hz
Frequency vs Sensitivity
DGP Relay System
64G1
12
11
10
Relative Sensitivity
9
32
8
7
6
5
24
Fixed Sampling Rate
of 12 Samples/ Cycle
4
3
32
59 46
2
1
0
0
10
20
30
40
50
60
70
80
90
100
110
System Frequency (Hz)
8
Industrial Systems
Additional Protective Features
• Accidental Energization Logic
50 (51V Pickup Flag)
AND
AND
AE
VTFF
V1 < 30V
DI1 - GEN.
OFF-LINE
AND
OR
PU
DO
PU=5 sec
DO=0.25 sec
OR
AND
AE ARM
• Sequential Trip Logic
Reverse Pwr.
No. 1
INLET VALVE
CLOSED
AND
OR
AND
TL1
32-1
Seq. Trip Enabled
DI1 - GEN.
OFF-LINE
SELBKDI1
9
Industrial Systems
Inputs
• (8) Currents
– Ia, Ib, Ic, In
(Neutral Side)
– Ia, Ib, Ic, In
(System Side)
• (4) Voltages
– Va, Vb, Vc
(Wye or Open Delta)
– Vng
(Neutral Ground Xfmr)
• IRIG-B Time Synchronization
• (6) Digital Inputs
– Two External Trip (DI3,
DI4)
– Generator Off-Line
Indication (AE)
– Turbine Inlet Valve Close
Indication (Sequential
Trip)
– Oscillography Trigger
– External VT Fuse Failure
10
Industrial Systems
Outputs
• (4) Trip Relays
– Two From A Contacts Each
– Configurable
• (11) Auxiliary Relays
– One Form C Contact Each
– Four Configurable Alarm Contacts (74A, 74B, 74C, 74D)
– Pre-defined Alarm Contacts
• Critical Self-Test Alarm
• Non Critical Self-Test Alarm
• VT Fuse Failure Alarm
• Test Pickup Indication
• Test Trip Indication
• Loss of Power Supply No. 1
• Loss of Power Supply No. 2
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Industrial Systems
Simplified Logic Diagram
Stator Differential (87G)
Accidental Energization (AE)
OR
TRIP A
94G
Reverse Pwr.(32-1, 32-2)
Overvoltage (59)
OR
TRIP B
94G1
OR
TRIP C
94G2
OR
TRIP D
94G3
OR
ALARM
74A
OR
ALARM
74B
OR
ALARM
74C
OR
ALARM
74D
Undervoltage (27)
Overcurrent with voltage restraint (51V)
Current Unbalance - Trip, Alarm (46T, 46A)
Stator Ground - Zone 1, 2 (64G1, 64-2)
Neutral Overcurrent (51GN)
Overexcitation, Trip (24T)
Generator On-Line
Overexcitation, Trip (24T)
Generator Off-Line
CONFIGURABLE LOGIC
Loss of Excitation (40-1, 40-2)
Under Frequency (81-1U, 2U,3U,4U)
Over Frequency (81-1O, 2O,3O,4O)
12
Industrial Systems
Monitoring
•
•
•
•
Present Values
Trip Circuit Monitor
Fault Reports (Last 3 Faults)
Sequence of Events
(Last 100 Events)
• Self Tests
13
Industrial Systems
Present Value Monitoring
• Currents
– System and Neutral Side (Ia, Ib, Ic, In)
– Negative Sequence
• Voltages
– Va, Vb, Vc
– % 3rd Harmonic Voltage (Phase and Neutral)
• Megawatts
• Mvars
• Frequency
• Status
of Digital
Inputsor Display Selected Parameters
Scroll
on Command
14
Industrial Systems
Trip Circuit Monitor
• Trip Voltage Monitor
– Normal Condition
– Four Trip Circuits (94G, 94G1, 94G2,
94G3)
• Trip Current Monitor
– Trip Condition
– Four Trip Circuits (94G, 94G1, 94G2,
94G3)
– Seal-in of Output Relay
• Disable/Enable Feature
15
Industrial Systems
Communications
• Local MMI (Standard)
– 2 Level Password Protection
– 16 LED Alphanumeric
Display
– Keypad with 20 Keys
– Separate Function Keys for
• Settings
• Action
• Information
– 19 LED Targets
– Status LED
– Local Printer Port
(AA, CA models)
16
Industrial Systems
Communications
[-]
Relay Functions
Login
Logout
Change access level
Hang up phone
Actions . . .
Information . . .
Settings . . .
Phone disconnected
DGP COMMUNICATIONS 1.35
Local Functions Setup
Help
• Remote Access
– Via RS232 & “DGP-LINK”
Software
– Front and Rear RS232 Ports
– 3 Level Password Protection
• Access to:
– Present Values
– Fault Report
– Sequence of Events
– Oscillography
– Manual Control
– Relay Settings
17
Industrial Systems
Present Values
GEN Simulator DGP
0000
PRESENT VALUES
Station ID:MALVERN
Generator ID:MODEL GENERATOR
10/28/9314:37:23:446
IAS: 5696.0 A -014 DEGS
IBS: 5488.0 A -142 DEGS
ICS: 4864.0 A 104 DEGS
IAR: 5680.0 A -014 DEGS
IBR: 5456.0 A -142 DEGS
ICR: 4880.0 A 104 DEGS
NEGATIVE SEQ CURRENT: 08.1 %
3RD HARM PH: 00.1 %
VAN:
VBN:
VCN:
008.5 KV
008.1 KV
008.2 KV
WATTS: +126.33 MWATT
VARS:
GEN OFF-LIN: OPEN
DIG IN 3: OPEN
OSC TRIG: OPEN
INLET VLV: OPEN
DIG IN 4:
OPEN
EXT VTFF: OPEN
FREQ: 60.00
SAMPLING FREQ:
3RD HARM N:
000 DEGS
-118 DEGS
122 DEGS
03.7%
+041.95 MVAR
•
•
•
•
•
•
Currents
Voltages
Watts
Vars
Frequency
Negative Sequence
Current
• 3rd Harmonic Voltage
• Status of Digital Inputs
720.0
18
Industrial Systems
Fault Report
Gen Simulator DGP
0000
FAULT REPORT

–
–
–
–
–
Station ID:MALVERN
Generator ID:MODEL GENERATOR
FAULT#: 02
FAULT DATE: 08/09/93
FAULT TYPE: ABC
TRIP TYPE: 87G
PREFAULT
-------------------------------------IAS: 0128.0 A
IBS: 0208.0 A
ICS: 0080.0 A
TRIP TIME: 05:10:37:829
SYSTEM OPERATING TIME: 000008
FAULT
-----------------------------------------------------IAS: 014672 A
IAR: 015664 A
IBS: 015264 A
IBR: 016704 A
ICS: 013600 A
ICR: 014960 A
INS: 0048.0 A
INR: 0384.0 A
VAN: 010.2 KV
VBN: 010.2 KV
VCN: 010.0 KV
WATTS: +1888.5 KWATT
VARS: +3777.0 KVAR

VN: 047.0 V


Currents
Voltages
Watts
Vars
Frequency
Post Fault
–
–
–
–
VAN: 693.0 V
VBN: 693.0 V
VCN: 679.4 V
FREQ: 60.00
Prefault
Currents
Voltages
Trip Targets
Operating Time
Selected Events
Last 3 Faults Stored
05:10:37.834 87G PHASE A ON
05:10:37.834 87G PHASE B ON
19
Industrial Systems
Sequence of Events
GEN Simulator DGP
0000
Events
Station ID:MALVERN
Generator ID:MODEL GENERATOR
10/29/93
14:39:54:971 94G TRIP CIRCUIT OPEN ALARM ON
10/29/93
14:33:35:661 94G2 TRIP SIGNAL RESET
10/29/93
14:33:35:660 32-1 OFF
10/29/93
14:33:35:639 32-2 OFF
10/29/93
14:33:34:396 32-1 ON
10/29/93
14:33:31:997 TURBINE INLET VALUE CLOSED
10/29/93
14:33:28:423 GENERATOR OFF-LINE
10/29/93
14:33:26:452 94G2 TRIP SIGNAL ON
10/29/93
14:33:26:451 32-2 ON
10/29/93
14:27:09:878 GENERATOR ON-LINE
10/29/93
14:27:04:968 TURBINE INLET VALUE OPEN
10/29/93
14:26:54:263 94G3 TRIP SIGNAL RESET
10/29/93
14:26:54:262 64G1 OFF
10/29/93
14:26:50:911 TURBINE INLET VALUE CLOSED
10/29/93
14:26:47:584 GENERATOR OFF-LINE
10/29/93
14:26:42:604 94G3 TRIP SIGNAL ON
10/29/93
14:26:42:603 64G1 ON
10/29/93
14:25:44:444 GENERATOR ON-LINE
10/29/93
14:25:38:202 TURBINE INLET VALUE OPEN
10/28/93
16:32:31:642 REMOTE - SETTINGS CHANGE DONE
10/28/93
16:32:30:882 REMOTE - SETTINGS CHANGE STARTED
• Operational Events
– Setting Changes
– Fault Data
– Status
• Diagnostic Self-Test Events
– Warning (Non-Critical
Alarm)
– Failure (Critical Alarm)
• Time Tagged to 1ms
Resolution
• Last 100 Events Stored
• Available at Communication
Port or at Printer Port
20
Industrial Systems
Sequence of Events
• Events Include:
– Trip Signal ON / RESET
– Protection Function ON / OFF
– Digital Input Status
– VT Fuse Failure Alarm ON / OFF
– Trip Circuit Open Alarm ON / OFF
– Trip Circuit ENERGIZED / NOT ENERGIZED
– Password Changed
– ENABLE / DISABLE Outputs
– Setting Change START / DONE
– Failure Messages (Critical Self-Test Alarm)
– Warning Messages (Non-Critical Self-Test Alarm)
21
Industrial Systems
Oscillography Data








Currents and Voltages
Digital Flags
Internal and External
Oscillography Triggering
120 Cycles of Storage
Capability
Up to 20 Cycles Prefault
Data
Up to 3 Trip Event Captures
ASCII File Format
(Readable by
EXCEL/LOTUS/DGP-DATA)
Fault Report and Settings
Saved for Each Fault
22
Industrial Systems
Hardware and Packaging
• Testing and Trouble Shooting
– Optional MOD-10 Modular Test and Connection Plugs
for Current/Voltage Injection
• Draw-Out Modular Construction
– Plug-In Modules for Test and Maintenance
– Removable Door
– Target Clearing Through Door
• Self-Test Diagnostics
– Critical Alarm
– Non-Critical Alarm
23
Industrial Systems
Nomenclature Selection Guide
DGP* * * A * *
1
1 AMP Rated
5
5 AMP Rated
0
One power supply, 48 Vdc
1
One power supply, 110/125 Vdc
2
One power supply, 220/250 Vdc
3
Two power supplies, 48 Vdc
4
Two power supplies, 110/125 Vdc
5
Two power supplies, 220/250 Vdc
A
With Test Blocks
B
Without Test Blocks
A
Future Use
A
Function Group A
See
B
Function Group B
DGP Selection
C
Function Group C
Guide
A
Revision Level
24
Industrial Systems
DGP Selection Guide
FUNCTIONS & FEATURES
Stator Differential 87G
Current Unbalance 46
Loss of Excitation 40-1, 40-2
Anti-motoring 32
OC - voltage restraint 51V
Stator Ground 64G1 (Fundamental OV)
Stator Ground 64G2 (3rd Harm. Comparator)
Neutral OC 51GN
Over Excitation 24 (Volts/Hz)
Over Voltage 59
Under Voltage 27
Under Frequency 81-U
Over Frequency 81-O
Accidental Energization Logic
Sequential Trip Logic
Voltage Transformer Fuse Failure VTFF
Oscillography Data Capture
Communication Ports
Printer Output
IRIG-B Input
Example:
power
A
B
C
X
X
X
X
X
X
X
2 Setpoints
X
X
X
X
X
4 Setpoints
4 Setpoints
X
X
X
X
2-RS232
X
X
X
X
1 Setpoint
2 Setpoints
X
X
X
X
X
X
X
X
X
X
X
X
X
2 Setpoints
4 Setpoints
2 Setpoints
4 Setpoints
X
X
X
X
X
X
X
2-RS232
X
X
2-RS232
DGP54BACA - DGP rated 5 amperes, 50/60 Hz, 110/125 VDC redundant
supplies, no built-in test blocks, function group A, revision A.
25